Permutation-lock.



F. c. ECKELMAN.

PERMUTATION LOCK.

APPLICATION FILED JUNE 25, 1915.

1,178,843. I Patented Apr. 11,1916.

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THE COLUMBIA PLANOGRAPH 90., WASHINGTON. D. c

F. c. ECKELMAN.

PERMUTATION LOCK.

APPLICATION FIYLED JUNE 25, 1915.

1,178,843. Patented Apr. 11,1916.

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\ rangement especially adapted to be usedv FREDERICK: o. ECKELMAN, or nnw YORK, Y,

PEBMUTATION-LOCK.

Specification of Letters Patent. Patentgd A 11,1916;

Application filedan 25, 1915. Serial No. 36,370.

To all whom it may concern:

Beitknown that I, FREDERICK 0. Bel an- MAN, a.- citizenof the United States, residing at New York, in the county 01": New York and State of New York, have invented new and useful'lmprovements in Permutatlon- Locks, of which the following is a. speclfication.

This invention relates to permutation locks'and-it consists in the novel features hereinafter described and claimed.

'An object of the invention is to provide a lock mechanism 0t simple structural arupon automobiles for. the purpose ofpreventing the use of the machine-- by an unauthorized person. Although the lock is especially adapted to be usedas just above indicated, it may by slight variationbe used to advantage upon satchels, handgrip-s or other receptacles of similar nature. q -With the above objects in. view the lock comprises casing; in: VVli1Cl1',-1S pivotally mounted a, lever provided with pins.-- Slotted tumblers are turnably mounted 1n the casing; for rotation about an axis common to: both and the said tumblers are turnable support so thatthe combination of the lock may: be'va-rie'd at will. V In the accompanying drawings: Figure :1

isa' side elevationof the lock. Fig. 2 isanedge elevation of the same.- Fig: 3 is a vertical sectional view of the sameicut on the line ofFi-g. Fig -i' is-a front elevation: of the lock with the forward plate of thec'asing removed. 'Figg5jis a: trans.

verse sectional view of-the lock. Fig; 6 is a frontelevation of a dial'plate used in the lock. "Fig. 7 is an edge elevation of the same. Fig. 8 is a front elevation" of another dial; used in the lock. Fig. 9 is'an edge elevation of the dial shown in Fig. 8; Fig.

1G is a front elevation of thelever used. inthe lock.v Fig. 11 is an edge elevation of the w said; lever; Fig. 12: is' a frontielevation of.

swung.

one of the means for adjustably securing the tumbler with relation to its. support. Fig. 13 is anedge elevation of the means shown in Fig. 12. Fig. 14 is a side elevation ofone otthe tumblers. Fig. 15 is a trans? verse sectional view-of the. tumbler. Fig.

16 is a perspective viewof-a block used-inl the lock structure.

The lock includes a casing"-1-whichfis normally closed atjitsjforward side byia detachable plate2. Thetcasing 1 may beof any suit-able designer pattern, and as shown in the'drawingsit-is inthe form of a fiat wedge-shapedbody. A post 3 is mounted inthe casing 1 and alever 4 is fulcrumed upon. the said post.- The lower portion of the lever 4 passes through ia-Il opening 5 provided atthe lower edge ofthe casing ltand the said lever is provided at its lower end-with a knob 6 of anysuitable I designer-pattern; The lever 4 is provided at one side-with a cam .7 which surrounds the post 3; The lever .4 also carrie'szatj i ts post 3.;pins8a JAs shown in Figs. 14; 5; "10 and 11 Qtii upperend and atthe opposite sides; of? the lever 14: is provided at itsintermediate.p-or- I tion, with an" outstanding resilient tongue i Srha ving at its freeendportion: a detentlO The casing 11 is provided at its lower portion with socketsll, 1'12 and .13, inwhi'ch the detent: 10 may engage when the levers is .When therlock' is used upon an" automobile or similar machine whichnecessitates' the use of an;electr1c current foreperatin'gthe spark plug-or similar'dev1ce,- the socket 13 may be .connected with the mag-- neto. the-socket11- may be connected with I the battery while no electrical connection. whatever is made with the socket 1-2. -There5. fore, when the lever 4' is swung to-bring the detent 10 into the socket 11". the electric current is established between thezb-atterv and the sparking plug. On the otherhand if the lever: i is swung to'bring the detent 10 in the socket13 an'electric current'is'estab lishedbetweenthe magneto-machine and the spark plug; 'When the detent 10 is in the '1 socket;12elect ric currentto the 'sparkgplu'g is interrupted. Therefore the lever-'amay serve as: -an electric switch;

If I A shaft 14: is turnably' mounted 'inthe upper portion of'the casing"1 -'andfisfpro vided at:- itsouter end with a-knob lfi'.

dial 16 is fixed to the shaft 14 andtheupper portion of thesaid dial is exposed through an opening 17 provided at the upper end of the plate 2. Tumblers 18 and 19 are mounted upon the shaft 14 and as these tumblers are of the same size and pattern a description of one will answer for both. Each of the said tumblers is provided at its side with a recess 20 and the said tumblers are provided at the wall of the recess 20 with inwardly disposed teeth 21. The tumblers are further provided with notches '22 which enter the said tumblers from the outer edges thereof as best shown in Figs. 3 and 14 of the drawings. Disks 23 and 24 are mounted upon theshaft 14 and are received inthe recesses 20 of the tumblers 18 and 19 bler18. A block 30 is loosely mounted upon respectively; The disks 23 and 24 are pro vided with peripheral teeth 25 which engage with the teeth 21 of the tumblers 18 and 19, whereby the said disks and tumblers are secured with relation to each other. The disk 23 is fixed by means of pins 26, or other suitable means, to the shaft 14, while the disk 24 is loose upon the shaft 14. A 'dial member 27 is j ournaled upon the shaft 14 and the upper portion of the said dial member 27 is disposed abovethe upper edge of the casing 1 as best shown in Figs. 4 and 5 of the drawings, The dial member 27 is provided at its side with a recess 28 in which the dial 16 snugly fits. Pins 29'connect the dial member 27 with the disk 24, consequently the said dial member 27 maybe used for turning the-tumbler 19, while the shaft 14 may be used for turning the tumthe eam 7 of the lever 4 and the upper surface of thesaid block is normally spaced below the peripheries of thetumblers 18 and 19 as best shown in Fig. 3 of'the drawings.

The dial members 16 and 27 are provided at their front faces with suitable graduations or numbers as shown in Fig. 4 of the drawings. v

The operation of the lock is as follows:

Assuming that the person who is operating the lock is familiar with the combination, the knob 15 is grasped and the shaft 14 is turned, whereby one of the numbers of the combination upon the dial 16 is brought to view through the opening 17. As the shaft 14 is turned the tumbler 18 is turned by the central or normal position.

tumblers 18 and 19 are in the paths of movement of the pins 8 upon the lever 4, the said lever 4 is free to be swung in either of two directions and thus an electric current may be established as hereinbefore indicated, or in the event that the lever is used for releasing other parts, of a mechanical look (not shown), the desired end is attained.

Should an attempt be made to operate the look by one who is unfamiliar with the combination, it is apparent that considerable difliculty would be experienced in properly positioning the tumblers 18 and 19 whereby their notches are brought into the paths of movement of pins 8 and until the said notches are brought into the said paths, the lever cannot be swung sufliciently to release the lock mechanism. Should such an unauthorized person attempt to manipulate the lock to discover the combination by the clicking sound thereof, he will be frustrated inthe attempt for the reasonthat when the lever 4 is swung the cam portion 7 thereof moves the block 30 up into contact with the peripheries of the tumblers 18 and 19, and prevents their further manipulation. Therefore there is nothing to guide the said person by the sound produced by striking the pins against the peripheries of the tumblers. It is, of course, understood that when the notches in the tumblers are properly positioned in the paths of movement of the pins and wh'en the cam portion-7 is turned, the block 30 is brought up into contact with the peripheries of both of the tumblers 18 and 19, and serves in part to hold the said tumblers against turning movement while the pins 8 move along the notches 22 thereof.

If the combination is properly set the pins will have free passage into the slots in disks and the lever 4 will be free to operate. If the combination is not properly set the slots 22 will not be in the paths of movement of the pins 8 and hence the lever 4 can beswung only to such an extent as to cause thecam 7 to move the block 30 into engagement with the peripheries ofthe disks 18 and 19 and thus the said disks cannot be turned until the lever 4 is returned to its This prevents a person from feeling the pins into the slots. It is also apparent that-by removing the front plate 2 from the casing 1 and by removing the shaft14 anda lever 4 from the casing 1, the tumblers 18 and 19 may be adjusted upon their respective disks and placedback in the lock casing, thus providing means for changing thecombination of the look at will.

From the above descriptiontaken in conjunction with theaccompanying drawing, it will be seen that a permutation lock of simple and durable structure is provided and that the parts may be easily manipu- Having described the invention what claimed is A permutation lock comprising a casing,

a lever pivoted in the casing and having a cam, pins carried by the lever, notched tumblers turnably mounted in the casing and 10 lying in the paths of movement of the pins,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

and a block loosely mounted upon the cam of the lever and engageable with the tumblers when the lever is swung.

In testimony whereof I afiix my signature in the presence of two witnesses.

FREDERICK o. EOKELMAN. Witnesses;

LEOPOLD Gr. STENER,

SAMUEL WIESENBERG.

Washington, D. G. 

